% ZHP 6/15修改
% by YLX 6/11
% Version 4.0
% Based on SBY's fQR.m
% calculating profit
function [profit, EYI, EYin, ProfitPart] = function_fQR(Q, R)
	global I ci cI r EYI EYin CURRENT ProfitPart % 主程序中定义
	Q_new = Q;
	R_new = R;
	cols = size(Q, 2);
	for n=1:cols
		Q_new(:, n) = r * (n - 1) * Q_new(:, n);
		R_new(:, n) = (n - 1) * R_new(:, n);
    end
        EYI(1, CURRENT)=sum(R_new(I, :));
        EYin(1, CURRENT)=sum(sum(R_new))/CURRENT;
		R_new = ci * R_new;
		R_new(I, :) = cI / ci * R_new(I, :);
        ProfitPart(1, CURRENT)=sum(sum(Q_new));
        ProfitPart(2, CURRENT)=ci*EYin(1, CURRENT)*CURRENT;%这就是作者错的地方，实际上不能用前面的EYin，应该单独算前I-1行。为了复现我这与原文保持一致
        ProfitPart(3, CURRENT)=sum(R_new(I, :));
	profit = ProfitPart(1, CURRENT)-ProfitPart(2, CURRENT)-ProfitPart(3, CURRENT);     
	return;


